Teaching materials have long been the staples in education. Teacher supply stores and catalogs are abundant. Most teachers would know of copy or shipping centers that readily do high quality printing. Makerspaces and some teacher prep rooms are well supplied to make professional quality objects of various types. Many teachers may not be aware of game development resources. There are two such game production resources that I have used that teachers may wish to consider.

The Gamecrafter - http://www.thegamecrafter.com
Make Playing Cards - http://www.makeplayingcards.com/

Each site can be used to advantage in some ways more beneficial than others. What are the varied features of each site? In what game production situations might you prefer one site over another? (Both have reasonable "one copy" rates, with discounting levels of differing types.)

Both sites require the use of rasterized (layered) graphic files. Adobe Illustrator, Adobe Photoshop, or maybe in some cases Microsoft Publisher. I have discovered that a free software service - Pixlr Editor, https://pixlr.com/editor/, can do an excellent job with either of the game production services above. Some other graphic effects (slanting, for example) can be done with Google Drawing, http://docs.google.com/drawings.

Although some of these sites may not be available in China, usually there are equivalents. I am eager to hear what you find that is similar - particularly for the game production resources - where the difficulty may be more in receiving finished product, than in simple access to the sites.